Okay, so this problem goes like this: A two-person tent is to be made so that the height at the center is a = 4 feet (see the figure below). If the sides of the tent are to meet the ground at an angle 60°, and the tent is to be b = 5 feet in length, how many square feet of material will be needed to make the tent? (Assume that the tent has a floor and is closed at both ends, and give your answer in exact form.) I am not sure how to set this one up. It looks like an equilateral triangle.

A two-person tent is to be made so that the height at the center is a = 4 feet.
If the sides of the tent are to meet the ground at an angle 60°, and the tent is to be b = 5 feet in length,
how many square feet of material will be needed to make the tent?
(Assume that the tent has a floor and is closed at both ends, and give your answer in exact form.)